Determination Of Degree Of Anisotropy Of Ktp Crystal Using Reflectance Anisotropy Spectroscopy Technique

Reflectance anisotropy spectroscopy (RAS) is a non-distractive optical probe ofrnsurfaces that is capable of operation within a wide range of environments. Inrnthis thesis by applying this optical technique it has been attempted to determinernthe degree of anisotropy of the biaxial Potassium Titanyl Phosphate (KTP) crystalrnwith fractional error 0.165 %. In addition, the angle between the two optical axesrnof KTP crystal has been calculated with mean error 0.16 % for the case of acuternangle and 0.17% mean error for obtuse angle. Furthermore, attempt was made tornapply the method to natural basalt rock which is found from Ertal’ Ale easternrnpart of Ethiopia

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